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D. W. MARMON.

' ROLLER MILL, 7 No. 276,440. Patented Apr; 24; 1883.

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' D. W; MARMON ROLLER MILL.

No, 276,440. Patented A151. 24, 1883.1

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ROLLER MILL.

Patented Apr. 24-,

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' UNITED STATES PATENT 4 OFFICE.

DANIEL W. MARMON, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE NOR- DYKE 8: M-ARMON COMPANY, OF SAME PLACE.

ROLLER-MILL.

SPECIFICATION forming part of Letters Patent No. 276,440, dated April 24, 1883.- Application filed October 31, 1882. (No model.)

To all whom it may concern Be it known that I, DANIEL W. MARMON, of the city of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements in Roller-Mills, of which the following is a specification.

The object of my said invention is to provide a new and improved means for operating both ends of the conntershaft of a roller-mill simultaneously. This object is accomplished by mounting the counter-shaft in verticallymovable journal-boxes, and attaching to the top and bottom of each of said boxes a rope, belt, or chain, which shall pass toa shaft, either below or above, which shall be common to both, and providingsuitable means (preferably a hand wheel or crank) by which the last-mentioned shaft may be rotated and the countershaft thus raised or lowered. 7

Referring to the accompanying drawings, which are made a part hereof, and on which similar letters of reference indicate similar parts, Figure l is a view, partlyin front elevation and partly in central vertical section, looking to the left from the dotted line a z in Fig.2, ofa roller-mill embodying myinvention Fig. 2, a transverse vertical sectional view, looking to the right from .the dotted line y y in Fig. 1; and Figs. 3, 4, and 5, views of al ternate constructions.

In said drawings, the portions marked A represent the frame-work of the machine; B B B B the roll-shafts; O. the counter-shaft; D, journal-boxes therefor E, spools or sheaves located above and below said journal-boxes; F, ropes, belts, chains, orsuch like devices connecting said spools; G. shafts upon which the spools are mounted H, a crank for'operating one ofsaid shafts; and l, J, and K, the belts of the machine, which are tightened or loosened by the lowering or raising of the counter-shaft.

The frame A, and many of the other parts of the machine, may be of any ordinary or approved form, my present invention being equally applicable to roller-mills of other forms Much of the mechanism shown, however, is the same as that shown and claimed in other patents or applications for patents in which I am interested, or modi- 5o fications or alternate constructions thereof.

The roll-shafts B B B B are provided with belt-pulleys b b b b, which are each connected by a belt to a pulley on the countershat't, as shown.

The counter-shaft G is mounted in the boxes D, and has pulleysc o c thereon. When the shaft is raised or lowered it loosens or tightens the belts I J K,.which is occasionally desirable in operating the mill.

The boxes D are adapted to slide toward or from the rolls, as shown, being provided with the slide-extensions d, which pass through and are adapted to move in hearings in the projections a a on the frame A. The exteno5 sions (1- are so formed at the extremities that the ropes -F may be securely fastened thereto.

The spools or sheaves E are mounted upon suitable shafts, Gr, above and below the boxes D, in suchrelation to said boxes that a line passingthrough the center thereof would come near to or touch their peripheries. Two of the spools may be mounted on short separate shafts, if desired, instead ofa full-length shaft, G, common to both,as the second set of spools areineffectidle spoolsorpulleys. Plainspools are shown having several turns of the rope around them; but it is obvious thatcommon sheaves having but a single turn of the rope would answer all purposes. 7

The ropes F are preferably wire ropes; but other ropes, chains, belts, or any device whereby the spools can be connected and simultaneously rotated may be substituted therefor. They should be securely attached to both the upper and lower extensions of the boxes D, as shown, and passed around and securely attached to the spools E, so that when said spools are rotated said boxes will be forced up and down with a positive motion; They may, 0 however, be attached to the lower extensions only, (see Fig. 3,) in which case the boxes and counter-shaft could be thereby held down against the belts, thus keeping said belts tight,

Several different arrangements of these ropes and spools are obvious, and any of them may be used without departing from myinventlon,

but would be supported by said belts only.

which is'the application of ropes and spools or sheaves to the raising or lowering, or both, of the counter-shaft'O of a roller-mill for the purpose of loosening or tightening the belts.

The shaft Gr may be located either above or below the counter-shaft C. It bears two of the spools or sheaves E, to which the ropes F are attached, and thus causes the boxes D and the opposite ends of the counter-shaft O to rise and fall in unison.

The crank H is an ordinary crank, and can be applied to either of the shafts of the spools E when it is desired to rotate said spools. Its operation will be readily understood. Instead of this crank, the lower shaft G may be extended to one side of the machine, and be there c0nnected,by means of miter-gears,with a sh aft which'shall extend up through the floor, and have a hand-wheel thereon, as in Fig. 3, as a means of rotating-the spool-shafts and spools. This device would be in some respects better than a crank, as it is capable of being operated with a less expenditure of strength and more steadily.

The several belts pass over the pulleys in the well-known manner in which they run in machines of this character, and which is fully shown and described in certain Letters Patent and applications for Letters Patent in which I aminterestede.g.,Letters PatentNo.265,927, dated October 10, 1882.

Fig. 3 is illustrative of one of the alternate constructions hereinbefore described. Fig. 4. shows an arrangement whereby the cross sh aft or shafts G are dispensed with, and ropes running over idle pulleys or spools are finally wound upon and operated by one spool.- Fig. 5 bears substantially the same relation to Fig. 4 that Fig. 3 does to Fig. 1.

Having thus fully described my said invention, what Iiclaim as new, anddesire to secure by Letters Patent, is-

1. The combination, in a roller-mill, with the counter-shaft and adjustable supports or boxes therefor, of rope gearing connected to said supports or boxes, whereby said counter-shaft may be adjusted, substantially as set forth.

2. The combination, in a roller-mill, of the roll-shafts, the counter-shaft, belts connecting pulleys on the same, ropes, or their-described equivalents, attached to the journal-boxes of said counter-shaft and to sheaves or spools, said spools, and means of rotating the'same, whereby said counter-shaft may be adjusted, substantially as set forth.

3. The combination of the counter-shaft 0, boxes D, spools E, ropes F, and means for rotating said spools, substantially as described, and for the purposes specified.

4.. In a roller-mill, the combination of the "roll-shafts, the counter-shaft, pulleys thereon, belts connecting the same, spools E, ropes F, shaft G, and means for rotating the same, whereby both ends of said counter-shaft may be simultaneously moved nearer to or farther from said roll-shafts, and said belts thus either tightened or loosened, substantially as set forth.

In witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 24th day of October, A. D1882.

DANIEL W. MARMON. LL. s1

Witnesses:

O. BRADFORD, CHAS. L. THURBER. 

